CN114728760B - Elevator device - Google Patents
Elevator device Download PDFInfo
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- CN114728760B CN114728760B CN202080079823.1A CN202080079823A CN114728760B CN 114728760 B CN114728760 B CN 114728760B CN 202080079823 A CN202080079823 A CN 202080079823A CN 114728760 B CN114728760 B CN 114728760B
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- state
- switch
- emergency stop
- stop device
- elevator
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- 230000009471 action Effects 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 description 45
- 230000002159 abnormal effect Effects 0.000 description 43
- 230000001133 acceleration Effects 0.000 description 34
- 230000005856 abnormality Effects 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses an elevator device which can accurately grasp the action state even if an emergency stop device is operated by an electric operator. The elevator apparatus includes an emergency stop device (40) provided in a car, and an electric operator (30) for operating the emergency stop device (40), and includes: a first switch (31) for detecting the operation of the electric operator (30); a second switch (41) for detecting the operation of the emergency stop device; and a state determination device (21) for determining the operation state of the elevator based on the on/off state of the first switch (31) and the second switch (41).
Description
Technical Field
The present invention relates to an elevator apparatus including an emergency stop device operated by an electric operator.
Background
In order to constantly monitor the lifting speed of a car and to make the car in a predetermined overspeed state stop in an emergency, an elevator apparatus is provided with a speed limiter and an emergency stop device. In general, a car and a speed limiter are connected by a speed limiter rope, and when an overspeed state is detected, the speed limiter limits the speed limiter rope to operate an emergency stop device on the car side, thereby emergency stopping the car.
In such an elevator apparatus, since a governor rope as a long object is laid in a hoistway, it is difficult to save space and reduce cost. In addition, when the governor rope swings, a structural object in the hoistway easily interferes with the governor rope.
In this regard, an emergency stop device that does not use a speed limiter rope has been proposed.
As a prior art relating to an emergency stop device that does not use a speed limiter rope, a technique described in patent document 1 is known. In this prior art, a brake unit having wedge-shaped brake shoes is provided at the lower part of the car, and a brake link is connected to the brake shoes. When the solenoid is operated in accordance with a command from the control unit, the brake link is moved upward by a mechanism linked with the solenoid. Thereby, the shoe is pulled upward to brake the car.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open publication No. 2013-189283
Disclosure of Invention
Technical problem to be solved by the invention
As described above, the conventional emergency stop device operated by an electric operator such as a solenoid is operated not only when an overspeed state is entered but also when a power failure occurs. Therefore, it is difficult to accurately grasp or quickly grasp the operation state of the elevator apparatus. Therefore, recovery of the elevator apparatus sometimes requires time.
Accordingly, the present invention provides an elevator apparatus capable of accurately grasping an operation state even if an emergency stop device is operated by an electric operator.
Technical means for solving the technical problems
In order to solve the above problems, an elevator apparatus according to the present invention includes an emergency stop device provided in a car, and an electric operator for operating the emergency stop device, the elevator apparatus including: a first switch that detects an operation of the electric operator; a second switch that detects an operation of the emergency stop device; and a state determination device that determines an elevator operation state based on/off states of the first switch and the second switch.
Effects of the invention
According to the present invention, the operation state of the elevator in which the emergency stop device is operated by the electric operator can be accurately grasped.
The problems, structures, and effects other than those described above will become more apparent from the following description of the embodiments.
Drawings
Fig. 1 is a schematic configuration diagram of an elevator apparatus according to an embodiment.
Fig. 2 is a block diagram showing a functional configuration of a safety control system provided in an elevator apparatus according to an embodiment.
Fig. 3 is a front view (normal operation state) showing a main part of the structure of the electric trigger 30.
Fig. 4 is a front view (electric trigger: non-operating state, emergency stop device: non-operating state) showing the structure of the emergency stop device 40.
Fig. 5 is a front view (electric trigger: operating state) showing a main part of the structure of the electric trigger 30.
Fig. 6 is a front view (at the time of power outage) showing the structure of the emergency stop device 40.
Fig. 7 is a front view (emergency stop device: operating state) showing the structure of the emergency stop device 40.
Fig. 8 is a flowchart showing a determination means for determining the operation state of an elevator.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same constituent elements are denoted by the same constituent elements or constituent elements having similar functions.
Fig. 1 is a schematic configuration diagram of an elevator apparatus according to an embodiment of the present invention.
As shown in fig. 1, the car 1 and the counterweight 2 are mechanically connected to one end and the other end of the main rope 3, respectively. The main ropes 3 are wound around the sheaves 7 and the rope sheave 6, whereby the car 1 and the counterweight 2 are suspended in a hoistway 101 provided in a building.
The sheave 6 is attached to a motor 5 provided in the hoisting machine 4. When the sheave 6 is rotationally driven by the motor 5, the main rope 3 is linearly driven by friction between the sheave 6 and the main rope 3. Thereby, the car 1 and the counterweight 2 move in opposite directions up and down within the hoistway 101. The car 1 moves while being guided by the car guide rail 9. The counterweight 2 is moved while being guided by a not-shown counterweight guide rail.
The hoisting machine 4 and the sheave 7 are mounted in a machine room 102 provided on a hoistway 101.
The drive control unit 20 provided in the machine room 102 includes a motor control device that drives and controls the motor 5, and a brake control device that drives the electromagnetic brake 8 included in the motor 5. The drive control unit 20 operates the motor control device and the brake control device based on signals provided to the car position/speed detection device 24 and the door zone detection device 23 of the car 1, thereby controlling the operation of the car 1. In the present embodiment, an ac motor such as a synchronous motor is applied as the motor 5. Further, the motor control device includes an inverter device that supplies ac power to the motor 5.
Here, the car position/speed detection device 24 includes an image sensor, and detects the position and speed of the car 1 based on image information of the surface state of the car guide rail 9 acquired by the image sensor. For example, the car position/speed detecting device 24 detects the position of the car 1 by comparing image information of the surface state of the car guide rail 9, which is measured in advance and stored in the storage device, with image information obtained by an image sensor. The car position/speed detecting device 24 calculates the speed of the car 1 from the detected time change in the position of the car 1.
In addition, instead of the image sensor, a rotary encoder provided on the car and rotated with the movement of the car may be used.
The door zone detection device 23 detects that the car 1 is located at a position where a door and a landing door, not shown, can be opened and closed.
A pair of emergency stop devices 40 are provided at the lower portion of the car 1. When the car 1 is in a predetermined overspeed state, the emergency stop device 40 is operated by an electric trigger 30 (electric operator) provided at the upper part of the car 1, and holds the car guide rail 9 to brake the car 1. The detailed structures of the electric trigger 30 and the emergency stop device 40 (fig. 3, 4) will be described later.
When it is determined that the lifting speed of the car 1 detected by the car position/speed detecting device 24 exceeds the rated speed and reaches the first overspeed (for example, a speed not exceeding 1.3 times the rated speed), the safety control unit 22 provided at the upper part of the car 1 outputs a command signal for shutting off the power supply for the motor 5 and the power supply for the electromagnetic brake 8, that is, the power supply connecting the motor control device and the brake control device in the drive control unit 20. Thereby, the motor 5 is stopped and the electromagnetic brake is in a braking state, so that the car 1 is stopped urgently.
In the motor control device, the connection between the inverter device and the power supply is cut off, but electric power is supplied from a commercial power supply or a battery to the control unit of the inverter device, and the control unit is in an operable state.
When the safety control unit 22 determines that the descent speed of the car 1 detected by the car position/speed detection device 24 reaches the second overspeed (for example, a speed not exceeding 1.4 times the rated speed), the safety control unit 22 outputs a command signal for driving the electric trigger 30. Thus, the emergency stop device 40 is operated by the electric trigger 30 to operate, and the car 1 is stopped in an emergency.
As will be described later, the electric trigger 30 includes a trigger operation switch (fig. 2 and 3) for confirming an operation of the electric trigger 30, and the emergency stop device 40 includes an abnormal acceleration detection switch (fig. 2 and 3) for confirming an operation of the emergency stop device 40. Based on the detection signals of these switches, an elevator state determination unit 21 included in the drive control unit 20 determines the operation state of the elevator. Based on the determination result of the elevator status determination unit 21, the drive control unit 20 controls the operation of the car 1.
Fig. 2 is a block diagram showing a functional configuration of a safety control system provided in the elevator apparatus according to the present embodiment.
In the present embodiment, the safety control unit 22 includes a microcomputer, and executes a predetermined program by the microcomputer to operate as described below. The drive control unit 20 also includes a microcomputer, but the microcomputer is provided independently of the microcomputer included in the safety control unit 22. Thus, the operation control and the safety control are independent, and the reliability of the elevator is improved.
The safety control unit 22 monitors the speed of the car 1 (hereinafter referred to as "car speed") detected by the car position/speed detecting device 24. When it is determined that the car speed (lifting speed) reaches the first overspeed, the safety control part 22 transmits car speed information, that is, a command signal for commanding the power supply for the motor 5 (M) and the power supply for the electromagnetic brake 8 to the drive control part 20. When receiving the command signal, the drive control section 20 opens contacts (contactors) between the motor control device and the brake control device and the power supply and cuts off the power supply.
When the safety control unit 22 determines that the car speed (descent speed) reaches the second overspeed, the safety control unit 22 transmits a trigger command, that is, a command signal for commanding the electric trigger 30 to drive, to the electric trigger 30. Upon receiving the trigger command, the electric trigger 30 operates the emergency stop device 40 to operate.
The safety control unit 22 monitors the on/off operation state of the abnormal acceleration detection switch 41, which is the operation confirmation switch of the emergency stop device 40. The safety control unit 22 also transmits abnormality acceleration detection switch operation information indicating the on/off operation state of the abnormality acceleration detection switch 41 to the drive control unit 20. For example, the safety control section 22 transmits the on/off signal received from the abnormal acceleration detection switch 41 to the drive control section 20.
The safety control unit 22 may determine whether or not the electric trigger 30 and the emergency stop device 40 are abnormal based on the on/off operation state of the abnormal speed increase detection switch 41, or based on any one or both of the on/off operation state of the abnormal speed increase detection switch 41, the car speed, and the trigger signal.
An output signal of the trigger operation switch 31, which is an operation confirmation switch of the electric trigger 30, is input to the drive control unit 20. The output signal of the trigger action switch 31 may be transmitted to the drive control section 20 via the safety control section 22. In this case, the safety control unit 22 monitors the operation state of the electric trigger 30.
In the present embodiment, the on state and the off state of the abnormal acceleration detection switch 41 indicate the operation (braking state) and the non-operation (non-braking state) of the emergency stop device 40, respectively. The on state and the off state of the trigger operation switch 31 indicate the operation (operation of the emergency stop device 40) and the non-operation (non-operation of the emergency stop device 40) of the electric trigger 30, respectively. That is, the on state and the off state correspond to "action" and "non-action", respectively. In addition, the off state and the on state may be made to correspond to "action" and "non-action", respectively.
The drive control unit 20 determines the operation state of the elevator by using the elevator state determination unit 21 based on the on/off state of the trigger operation switch 31 and the on/off state of the abnormal acceleration detection switch 41, which are indicated by the received output signal of the trigger operation switch 31 and the abnormal acceleration detection switch operation information, respectively. In the present embodiment, the elevator status determination unit 21 determines whether the operation status of the elevator is a normal operation status (normal running status), a power failure status, a failure status of the emergency stop device, or a status in which the overspeed is detected and the emergency stop device is operated.
Based on the determination result of the operation state of the elevator obtained by the elevator state determination unit 21, the drive control unit 20 continues the normal operation of the elevator, or returns the elevator from the stopped state to the normal operation state, or maintains the stopped state of the elevator.
When it is determined that the operation state of the elevator is a failure state of the emergency stop device, an overspeed is detected, and the emergency stop device is operated, an abnormality notification signal is transmitted from the monitoring terminal device monitoring the operation state of the elevator to the outside based on a signal from the drive control unit 20. For example, the abnormality notification signal is transmitted from the monitoring terminal device to a monitoring server device provided in a monitoring center geographically remote from the elevator installation site. Based on the abnormality notification signal, a maintenance technician goes to an elevator installation place to perform maintenance inspection, repair or restoration of the elevator.
Fig. 3 is a front view showing a main part of the structure of the electric trigger 30 in fig. 1. In fig. 3, the elevator is in a normal operation state. The trigger operation switch 31 is in a non-on state, that is, an off state, and the electric trigger 30 is in a non-operation state, that is, a non-operation state of the emergency stop device.
As shown in fig. 3, the electric trigger includes: a stator 33, the stator 33 having a solenoid core 34 around which a winding is wound; and a movable member 32, the movable member 32 being insertable into the solenoid core 34. The upper link 36 for pulling up a wedge (42 in fig. 4) in an emergency stop device described later is interlockingly connected with the movable member 32 through a link mechanism 35.
An upper tie rod 36 is provided for each of a pair of emergency stop devices ("40" in fig. 1). Although only the upper tie rod 36 for pulling up the wedge of one of the pair of emergency stop devices is shown in fig. 3, an upper tie rod (not shown) for pulling up the wedge of the other of the pair of emergency stop devices is also interlockably connected to the movable member 32 through the link mechanism 35. Thereby, both wedges of the pair of emergency stop devices are pulled up simultaneously.
In fig. 3, the windings of the solenoid core 34 are energized. Thereby, the movable member 32 is attracted into the solenoid core 34 by the electromagnetic force. Here, the movable member 32 is biased by an elastic member (not shown) such as a spring, so that the movable member 32 protrudes from the solenoid core to the outside. In fig. 3, the movable member 32 is attracted by electromagnetic force that is larger than the acting force.
As shown in fig. 3, the trigger switch 31 is provided adjacent to the movable member 32 in the car 1. A trigger switch 31 is fixed to a support member such as a bracket fixed to the car 1. The trigger switch 31 is operated by the movable member 32. In fig. 3, since the movable member 32 is sucked into the solenoid core 34, the movable member 32 is away from the trigger switch 31. In this case, the mechanical electrical contact of the trigger action switch 31 is in an open state. That is, the trigger operation switch 31 is in the non-on state or the off state, which means that the electric trigger 30 is in the non-operation state.
Fig. 4 is a front view showing the structure of the emergency stop device 40 in fig. 1. In fig. 4, the electric trigger 30 is in the non-operating state (fig. 3), and thus the emergency stop device 40 is in the non-operating state.
The emergency stop device 40 includes a housing 45 (or frame) fixed to a lower portion of the car 1, a pair of wedges 42 as a brake, and a pair of guide members 43 for guiding movement of the wedges 42. The wedge 42 is provided to be movable in the up-down direction within the housing 45. The guide member 43 is fixed to an upper portion inside the housing 45.
The width of the wedge 42 narrows as it moves upward. In the wedge 42, a side surface facing the car guide rail 9 is formed into a substantially vertical surface, and a side surface on the opposite rail side is formed into an inclined surface.
The guide member 43 is located on the opposite rail side with respect to the wedge 42. The guide member 43 has a wedge shape, and the width becomes narrower with the downward side. In the guide member 43, the wedge-side surface forms an inclined surface, and the reverse wedge-side surface forms a substantially vertical surface. When the wedge 42 is pulled up by the pull-up lever 36, the inclined surface of the wedge 42 slidably contacts the inclined surface of the guide member 43, so that the guide member 43 guides the wedge 42 to move upward.
As shown in fig. 4, an abnormal acceleration detection switch 41 is fixed to the upper portion of the housing. The abnormal acceleration detection switch 41 is pressed by the upper end portion of the wedge 42 and operated. In fig. 4, the electric trigger 30 is in a non-actuated state, and the wedge 42 is not pulled up. Therefore, the upper end portion of the wedge 42 is away from the abnormal acceleration detection switch 41. In this case, the mechanical electrical contact of the abnormal acceleration detection switch 41 is in an open state. That is, the abnormal acceleration detection switch 41 is in the non-on state, that is, the off state, indicating that the emergency stop device 40 is in the non-operating state.
Fig. 5 is a front view of the same main part as fig. 3 showing the structure of the electric trigger 30. In fig. 5, the electric trigger 30 is in an operating state.
In fig. 5, the energization of the windings of the solenoid core 34 is stopped or cut off. That is, fig. 5 corresponds to a case of power failure or a case of transmission of a trigger command from the safety control unit 22.
The electromagnetic force is lost as the energization of the windings of the solenoid core 34 is stopped or disconnected. Therefore, the movable member 32 protrudes from the solenoid core to the outside by the biasing force of the elastic member, not shown. At this time, the trigger switch 31 is pressed and operated by the end of the movable member 32 facing the trigger switch 31. In this case, the mechanical electrical contact of the trigger action switch 31 is in a closed state. That is, the trigger operation switch 31 is in the on state, that is, in the on state, indicating that the electric trigger 30 is in the operation state.
Fig. 6 is a front view showing the structure of the emergency stop device 40 in fig. 1. Fig. 6 shows the state of the emergency stop device 40 at the time of power failure.
When the power fails, the motor 5 of the traction machine 4 is stopped, and the electromagnetic brake 8 is in a braking state, so that the car 1 is stopped. Therefore, although the electric trigger 30 operates as described above (fig. 5), the upper end portion of the wedge 42 in the emergency stop device 40 does not reach the abnormal acceleration detection switch 41. In this case, the abnormal acceleration detection switch 41 is not operated at the upper end portion of the wedge 42, and the mechanical electrical contact of the abnormal acceleration detection switch 41 is in an open state. That is, the abnormal acceleration detection switch 41 is in the non-on state, that is, the off state, indicating that the emergency stop device 40 is in the non-operating state.
As described above, the abnormal acceleration detection switch 41 is provided at a position where the upper end portion of the wedge 42 does not reach even when the electric trigger 30 operates at the time of power failure.
Fig. 7 is a front view showing the structure of the emergency stop device 40 in fig. 1. In fig. 7, the emergency stop device 40 is in an operating state.
When the descent speed of the car 1 reaches the second overspeed (for example, a speed not exceeding 1.4 times the rated speed), the electric trigger 30 is operated, the wedge 42 is pulled up, and the emergency stop device 40 is in the operating state shown in fig. 7 when the car 1 descends.
As shown in fig. 7, a pair of wedges 42 enter between a pair of guide members 43, and the upper ends of the wedges 42 reach the upper portion inside the housing 45. As a result, the pair of wedges 42 are pressed from both sides by the pair of guide members 43 and the elastic body 44 such as a spring, and clamp the car guide rail 9. At this time, the car 1 is rapidly decelerated and stopped by a frictional force acting between the pair of wedges 42 and the car guide rail 9.
As shown in fig. 7, the upper end portion of the wedge 42 reaches the abnormal acceleration detection switch 41, and presses the abnormal acceleration detection switch 41. Thus, the abnormal acceleration detection switch 41 is operated by the upper end portion of the wedge 42, and therefore the mechanical electrical contact provided in the abnormal acceleration detection switch 41 is in a closed state. That is, the abnormal acceleration detection switch 41 is in the off state, which is the non-on state, indicating that the emergency stop device 40 is in the active state.
As described above, the on/off states of the trigger action switch 31 and the abnormal acceleration detection switch 41 are different depending on the action state of the elevator. Therefore, as described below, the operation state of the elevator can be determined based on the on/off states of the trigger operation switch 31 and the abnormal acceleration detection switch 41.
Fig. 8 is a flowchart showing a determination unit of the operation state of the elevator based on the on/off state of the trigger operation switch 31 and the abnormal acceleration detection switch 41. The determination process of the present flowchart is executed by the elevator status determination unit 21 (fig. 2) in the drive control unit 20. In the present embodiment, a computer system such as a microcomputer executes a predetermined program to perform the determination processing according to the present flowchart.
When the state determination process is started, in step S1, the elevator state determination section 21 acquires a signal of the abnormal acceleration detection switch 41 via the safety control section 22, and determines whether the abnormal acceleration detection switch 41 is in an off state based on the acquired signal. When the elevator status determination unit 21 determines that it is in the off state (yes in step S1), then step S2 is executed, and when it is determined that it is not in the off state (i.e., it is in the on state) (no in step S1), then step S3 is executed.
In step S2, the elevator status determination unit 21 acquires a signal for triggering the operation switch 31, and determines whether the operation switch 31 is in an off state based on the acquired signal. When the elevator status determination unit 21 determines that it is in the off state (yes in step S2), then step S4 is executed, and when it is determined that it is not in the off state (i.e., it is in the on state) (no in step S2), then step S5 is executed.
In step S3, the elevator status determination unit 21 acquires a signal for triggering the operation switch 31 in the same manner as in step S2, and determines whether or not the operation switch 31 is in the off state based on the acquired signal. When the elevator status determination unit 21 determines that it is in the off state (yes in step S3), then step S6 is executed, and when it is determined that it is not in the off state (i.e., it is in the on state) (no in step S3), then step S7 is executed.
In step S4, the elevator status determination unit 21 determines that the elevator is in the normal running state. Here, both the trigger action switch and the abnormal acceleration detection switch 41 are in an off state. That is, both the electric trigger 30 and the emergency stop device 40 are in the inactive state (fig. 3 and 4). Therefore, the operation state of the elevator is a normal running state.
In step S5, the elevator status determination unit 21 determines that the elevator is in a stopped state. Here, the trigger switch 31 is on, whereas the abnormal acceleration detection switch 41 is off. That is, the electric trigger 30 is in an active state, whereas the emergency stop device 40 is in a non-active state (fig. 5 and 6). Therefore, the operation state of the elevator is a power failure state.
In step S6, the elevator status determination unit 21 determines that the elevator is in a failure state. Here, the trigger switch 31 is in an off state, whereas the abnormal acceleration detection switch 41 is in an on state. That is, although the electric trigger 30 is in the non-operating state, the emergency stop device 40 is in the operating state (fig. 5 and 6). Therefore, the emergency stop actions of the electric trigger 30 and the emergency stop device 40 are abnormal, and the action state of the elevator is a failure state.
In step S7, the elevator status determination unit 21 determines that the elevator is in an abnormal speed-increasing state, that is, that the speed of the car 1 exceeds the second overspeed and is in an emergency stop state by the emergency stop device 40. Here, both the trigger action switch and the abnormal acceleration detection switch 41 are in the on state. That is, both the electric trigger 30 and the emergency stop device 40 are in the operating state (fig. 3 and 6). Therefore, the operating state of the elevator is an abnormal speed-increasing state in which an emergency stop by the emergency stop device is required.
When steps S4 to S7 are executed, the elevator status determination unit 21 ends a series of determination processes.
The drive control unit 20 controls the operation of the elevator based on the determination results in steps S4 to S7, for example, as described below.
When the normal running state is determined as in step S4, the drive control unit 20 continues the normal running control.
When it is determined that the power failure state is present, the drive control unit 20 performs power failure time control operation control as in step S5. For example, the drive control unit 20 switches the power supply to the battery, returns the electric trigger 30 to the non-operating state, and moves the car 1 at a speed lower than the rated speed, or automatically stops the car 1 on the nearest floor.
If it is determined that the vehicle is in the failure state as in step S6, and if it is determined that the vehicle is in the abnormal speed-increasing state as in step S7, the drive control unit 20 transmits an abnormality notification signal via the monitor terminal device. Different abnormality notification signals are transmitted in the failure state and the abnormal speed-increasing state. When an abnormality notification signal is received at a monitoring center, a business office, or the like, a maintenance technician goes to an elevator installation site to perform maintenance, repair, or restoration of the elevator. In this case, the maintenance technician can grasp which of the failure state and the abnormal speed-increasing state is before the start of the operation, and therefore, the operation can be performed quickly by an appropriate means according to the state of the elevator.
According to the above embodiment, the operation state of the elevator apparatus having the emergency stop device 40 operated by the electric trigger 30 as the electric operator can be accurately or promptly determined based on the on/off states of the trigger operation switch 31 and the abnormal acceleration detection switch 41.
Further, according to the above embodiment, it is possible to determine whether the operation state of the elevator apparatus is the normal operation state, the power failure state, the failure state, or the abnormal speed-increasing state. Therefore, the operation state of the elevator apparatus can be specifically determined.
Further, since the trigger operation switch 31 and the abnormal acceleration detection switch 41 are operated by the mechanically movable portions in the electric trigger 30 and the emergency stop device 40, respectively, the operation state and the non-operation state of the electric trigger 30 and the emergency stop device 40 can be detected with high reliability.
The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments are described in detail for the purpose of understanding the present invention, and the present invention is not necessarily limited to include all the structures described. In addition, deletion, and replacement of other structures can be performed for a part of the structure of the embodiment.
For example, the electric trigger 30 may be provided in a lower portion or a lateral portion of the car 1 in addition to the upper portion of the car 1. Further, the electric trigger 30 may include a linear actuator.
The elevator apparatus may be a machine-room-less elevator in which a hoisting machine and an elevator control apparatus (drive control unit 20) are provided in a hoistway.
Description of the reference numerals
1 … car, 2 … counterweight, 3 … main rope, 4 … hoisting machine, 5 … motor, 6 … sheave, 7 … sheave, 8 … electromagnetic brake, 9 … car guide rail, 20 … drive control, 21 … elevator status determination, 22 … safety control, 23 … door zone detection device, 24 … car position/speed detection device, 30 … electric trigger, 31 … trigger action switch, 32 … movable member, 33 … stator, 34 … solenoid core, 35 … linkage, 36 … upper sheave, 40 … emergency stop device, 41 … abnormal speed increase detection switch, 42 … wedge, 43 … guide member, 44 … elastomer, 45 … housing, 101 …, 102 machine room ….
Claims (7)
1. An elevator apparatus including an emergency stop device provided in a car and an electric operator for operating the emergency stop device, the elevator apparatus comprising:
a first switch that detects an operation of the electric operator;
a second switch that detects an operation of the emergency stop device; and
a state determination device that determines an elevator operation state based on/off states of the first switch and the second switch,
the state determination device determines which of a normal operation state, a power failure state, a fault state, and an emergency stop state of the emergency stop device is the elevator operation state,
one state and the other state of the on/off states of the first switch represent an operating state and a non-operating state of the electric operator,
said one state and said other state of said on/off state of said second switch represent an active state and a non-active state of said emergency stop device respectively,
the state determination means determines that the normal operation state is present when the first switch is in the other state and the second switch is in the other state.
2. An elevator apparatus including an emergency stop device provided in a car and an electric operator for operating the emergency stop device, the elevator apparatus comprising:
a first switch that detects an operation of the electric operator;
a second switch that detects an operation of the emergency stop device; and
a state determination device that determines an elevator operation state based on/off states of the first switch and the second switch,
the state determination device determines which of a normal operation state, a power failure state, a fault state, and an emergency stop state of the emergency stop device is the elevator operation state,
one state and the other state of the on/off states of the first switch represent an operating state and a non-operating state of the electric operator,
said one state and said other state of said on/off state of said second switch represent an active state and a non-active state of said emergency stop device respectively,
the state determination means determines that the power failure state is present when the first switch is in the one state and the second switch is in the other state.
3. An elevator apparatus including an emergency stop device provided in a car and an electric operator for operating the emergency stop device, the elevator apparatus comprising:
a first switch that detects an operation of the electric operator;
a second switch that detects an operation of the emergency stop device; and
a state determination device that determines an elevator operation state based on/off states of the first switch and the second switch,
the state determination device determines which of a normal operation state, a power failure state, a fault state, and an emergency stop state of the emergency stop device is the elevator operation state,
one state and the other state of the on/off states of the first switch represent an operating state and a non-operating state of the electric operator,
said one state and said other state of said on/off state of said second switch represent an active state and a non-active state of said emergency stop device respectively,
the state determination means determines that the fault state is present when the first switch is in the other state and the second switch is in the one state.
4. An elevator apparatus including an emergency stop device provided in a car and an electric operator for operating the emergency stop device, the elevator apparatus comprising:
a first switch that detects an operation of the electric operator;
a second switch that detects an operation of the emergency stop device; and
a state determination device that determines an elevator operation state based on/off states of the first switch and the second switch,
the state determination device determines which of a normal operation state, a power failure state, a fault state, and an emergency stop state of the emergency stop device is the elevator operation state,
one state and the other state of the on/off states of the first switch represent an operating state and a non-operating state of the electric operator,
said one state and said other state of said on/off state of said second switch represent an active state and a non-active state of said emergency stop device respectively,
the state determination means determines that the emergency stop state is present when the first switch is in the one state and the second switch is in the one state.
5. Elevator arrangement according to any of claims 1 to 4, characterized in that,
the first switch is operated by a movable portion of the electric operator,
the second switch is operated by a movable portion of the emergency stop device.
6. The elevator apparatus of claim 5, wherein,
the movable portion of the electric operator is a movable member into which a solenoid is inserted.
7. The elevator apparatus of claim 5, wherein,
the movable part of the emergency stop device is a wedge.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/006725 WO2021166144A1 (en) | 2020-02-20 | 2020-02-20 | Elevator device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114728760A CN114728760A (en) | 2022-07-08 |
| CN114728760B true CN114728760B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080079823.1A Active CN114728760B (en) | 2020-02-20 | 2020-02-20 | Elevator device |
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| Country | Link |
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| JP (1) | JP7212201B2 (en) |
| CN (1) | CN114728760B (en) |
| WO (1) | WO2021166144A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118019700A (en) * | 2021-10-07 | 2024-05-10 | 株式会社日立制作所 | Failure detection device and failure detection method for electric work implement for emergency stop device |
| JPWO2023058199A1 (en) * | 2021-10-07 | 2023-04-13 | ||
| JP7324434B1 (en) | 2022-02-21 | 2023-08-10 | フジテック株式会社 | elevator |
| WO2024004086A1 (en) * | 2022-06-29 | 2024-01-04 | 株式会社日立製作所 | Elevator device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2021166144A1 (en) | 2021-08-26 |
| JP7212201B2 (en) | 2023-01-24 |
| WO2021166144A1 (en) | 2021-08-26 |
| CN114728760A (en) | 2022-07-08 |
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